First Stage Cooler

TM 5-4310-340-24

(5)

Remove cooler from compressor.

3-13. Fourth Stage Relief Valve Tube

a. Removal (fig C-5).

b. Installation (fig C-4).

(1) Remove relief valve (para 3-12).

(1) Position cooler (3) on fan guard brackets (26)

(2) Disconnect relief valve tube (8) from restrictor

and loosely connect cooler end nuts to elbow (9) and relief

fitting (9). Remove tube from compressor.

valve (8).

b. Installation.

(2) Position clamp (4) on cooler (3) and secure to

(1) Position relief valve tube (8) to restrictor fitting

aftercooler clamp with screw (6), nut (7), and two washers (5).

(9) and loosely connect tube end nut to restrictor fitting.

(3) Install third stage cooler (para 3-8).

(2) Install relief valve (para 3-12).

(4) Tighten second stage cooler end nuts to 135-

(3) Tighten relief valve tube nut and restrictor

150 lb-in.

fitting to 135-150 lb-in.

3-10. First Stage Cooler

3-14. Aftercooler

a. Removal

(1) Remove second stage cooler (para 3-9).

(1) Remove first stage air inlet fitting (1, fig C-6).

(2) Remove air inlet fitting (1, fig C-6).

(2) Remove fan (para 3-6).

(3) Disconnect cooler (1,fig C-4) from elbows (21

(3) Remove four screws (23, fig C-3),

and remove cooler from compressor.

lockwashers (24), and flat washers (25) securing fan guard

b. Installation.

clamps (26) to compressor.

(1) Position cooler (1, fig C-4) on fan guard

(4) Remove two screws (31), flat washers (30),

brackets and loosely connect cooler end nuts to elbows (2).

and nuts (28) securing bracket (36) to clamps (29).

(2) Install second stage cooler (para 3-9).

(5) Loosen tube (38) end nut at elbow (39) and

(3) Tighten first stage cooler end nuts to 270300

move tube away from coolers. Tighten tube end nut if oil

lb-in.

sump is not drained.

(4) Install air inlet fitting (1, fig C-4).

(6) Remove screw, nut, and washers securing

third stage cooler clamp, at relief valve end of cooler, to after

cooler clamp.

3-11. Aftercooler Tube

(7) Remove screw, nut, and washers securing

a. Removal.

second stage cooler clamp, at relief valve end of cooler, to

(1) Remove first stage cooler (para 3-10).

aftercooler clamp.

(2) Disconnect aftercooler tube (10, fig C-4) from

(8) Disconnect first stage cooler (1, fig C-4) from

union (5, fig C-5) and elbow (11, fig C-6). Remove tube from

elbows. (9).

compressor.

(9) Disconnect second stage cooler (3) from relief

b. Installation.

valve (8) and elbow (9).

(10) Disconnect third stage cooler (2, fig C-3) from

(1) Position aftercooler tube (10, fig C-4) on fan

relief valve (27) and elbow (1).

guard brackets and loosely connect tube end nuts to union (5,

(11) Disconnect aftercooler tube (10, fig C-4) from

fig C-5) and elbow (11, fig C-6).

union (5, fig C-5) and elbow (11, fig C;6).

(2) Install first stage cooler (para 3-10).

(12) Remove coolers, aftercooler tube, and fan

(3) Tighten aftercooler end nuts to 135-150 lb-in.

guard brackets from compressor.

(13) Remove cylinder head screw (14, fig C8)

3-12. Fourth Stage Relief Valve

securing relief valve clamp bracket to head.

a. Removal (fig C-5).

(14) Disconnect relief valve tube (8, figC-5) from

(1) Remove screw (1), nut (3), and washers

restrictor fitting (9). Remove relief valve, relief valve tube,

(2) securing clamp (11) to bracket (10). Remove clamp (11)

clamp, and clamp bracket from compressor.

from relief valve (7).

(15) Remove screw (1), nut (3), and washers (2)

(2) Disconnect relief valve tube (8) end nut from

securing aftercooler clamp (4) to bracket (12).

relief valve (7) and remove relief valve.

(16) Disconnect aftercooler tube from restrictor

fitting (9).

b. Installation.

(17) Remove elbow (1, fig C-3) from head.

(1) Position relief valve (7) to end of relief valve

tube (8). Tighten relief valve tube end nut to 135-150 lb-in.

(2) Position clamp (11) on relief valve (7). Secure

clamp (11) and clamp (4) to bracket (10) with screw (1), nut

(3), and washers (2).

3-4